Camber-punching device.



F. A. STEVENSON.

CAMBER PUNCHING DEVICE.

APPLICATION FILED m. 10. 1914.

Patented Dec. 14, 1915.

2 SHEETS-SHEET 1.

TOREY F. A. STEVENSON.

CAMBER PUNCHING DEVICE.

APPLICATION FILED FEB- IOI 19M. Patented Dec. 14, 1915.

2 SHEETS-SHEET 2.

IN VEN TOR.

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@FFTC.

FREDERICK A. STEVENSON, OF DETROIT, MICHIGAN, ASSIGNOR TO AMERICAN GAR AN D FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

Canaan-romaine nnvrcn.

Specification of Letters Patent.

Application fllediebruary 10, 1914. Serial No. 817.797.

To all whom it may concern Be it known that I, FREDERICK A. STEVEN- SON, residing at Detroit, Michigan, and being a citizen of the United States, have invented certain new and useful Improvements in Camber-Punching Devices, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and to use the same, reference being had to the accompanying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof will occur to persons skilled in the art.

in said drawings: Figurel is a front elevation of the camber punching device, the guide and templet being shown in section. Fig. 2 is a view similar to Fig. 1, but in vertical section. Fig. 3 is a horizontal section along the line 33 of Fig. 1. Fig. 4 is a vertical section along the line 44 of Fig. 1, looking in the direction of the arrows, and showing roller supports for the guide, templet and work. Fig. 5 is a detail sectional view along the line 55 of Fig. 1, through the top plate and one of the punch blocks, showing the gag in position to render the punch operative; and Fig. 6 is a detail of the templet indicator.

Among the various types of railroad cars willbe found those of considerable length, whose longitudinal sills, center and side, are designed to resist the tendency of said sills to sag within the portion located between the bolsters, by being provided with a camber.

The present invention has to do with a de-, vice for conveniently and economically punchin the holes paralleling the camber of the sill, and in the operation of the machine herein described this is in conjunction with whatever other punching operations are required upon said sill. This eliminates an extra operatic-n hitherto necesasry because of the arcuated path of the camber paralleling holes, it being evident that with a straight feeding of the work to the punches, a set punch would intersect the center line of the camber paralleling holes at only two points, z'. e., at each extremity of the curved center line.- A

With the device herein described set up in a multiple punch, if any gang of punches be set up in connection with it, a smooth uniform advance of the work through the multlple punch can be secured, and, upon the completion of the advance of the work, all

holes to be punched in the sill, including those which are in juxtaposition to the cambered edge will have been produced with a single passage of the work.

The cambering device is illustrated in the drawings accompanying and forming part of this specification, but it has been deemed unnecessary to illustrate a gang of set up punches as this is an old and common practice, and forms no part of the present invention, except in that it may, and often will, be found desirable to operate my device in connection with one of the countless set ups possible in a gang of punches.

Referring now to thedrawings, 1 indicates the web for a built-up center sill, sheared from commercial plate, shown in dot and dash lines, it being noticed, that in the form of the device shown, two such webs may be operated upon at the same time. It is, of course, obvious that the device may be modified to operate upon but a single web or plate, or, on the other hand, upon a greater number than two.

The plates 1 are from time to time advanced in a well known manner moving over the bottom plates 2 which constitute guides for the sliding die blocks 3. Reference to Fig. 3 will disclose short intersecting lines or crosses in proximity to the cambered edges of plates 1. These intersections rep resent the location of holes to be punched. By a' further scrutiny of said figure there will be observed a longitudinally movable templet 4 carried by a longitudinally movable punch guide 5, said templet being provided with transverse graduations 6. The longitudinal spacing of the graduations just referred to agrees with the spacing of the holes in plates 1, as indicated by the crosses, though, it is to be understood, the crosses are not placed on the plates in reality, being employed in the drawing simply as an aid to description. By reason of not having to markthe location of the holes on the plate considerable time is saved, particularly where a great number of plates are to be operated upon.

An indicator 7 is employed in connection with the graduations 6 upon the templet 4, and is in the form of: a cylindrical rod provided at its upper end with a head and beingbeveled or chisel-shaped at its lower end.

Said indicator is held in suspension by a block 8, located and secured in a T-shaped slot 9 in the top plate 10, the latter being bolted to the slide 11 of the multiple punch.

Whenever the plates 1, templet '4 and guide 5 are advanced, they move in unison until one of the raduations 6 comes underneath the beveled or pointed end of the indicator 7 whereupon an attendant causes the forward movement of the plates, templet and guide to cease, it being then known that the location for a holein each plate 1 is in alinement with its respective punch 12, carried by its associated punch block 13, the

. latter being slidably retained in the T-slot 9 v the contour ofsaid plates.

of the top plate 10.

Upon the downward thrust of the slide 11, the punches 12 will'descend, and, penetrating the webs or plates 1, enter their dies 14. A ter the upward or return stroke of slide 11, and, consequently the punches, the guide 5, with the templet 4 and the plate 1 W111 be again advanced until the next of the graduations 6 comes beneath indicator 7, whereupon the parts just mentioned are again brought to rest with the location of the center of the next hole to be punched in each plate in coincidence with the centers of its respective punch and die.- v In Fig. 3, the central portion of webs or plates 1 are shown, and at the middle for a short distance the holes to be punched are in a straight line, in this particular instance. The camber is apparent each side of this short middle portion. Now, it will be noticed that the sides of the guide 5 are parallel to the cambered edgesof plates 1 and change their direction in accordance with As rollers 15, which are rotatably mounted upon vertical pintles 16, the latter having a driving fit in die blocks 3 and extending upwardly into cylindrical holes in the punch blocks 13 of substantially the same diameter as the pintles themselves, are spring pressed at all times against the sides of the uide 5, they must respond to all changes 0 direction of the said sides of ide 5. This being so, as the sides of guide 5 follow the camber of the plates or webs 1, the rollers 15 are compelled to do likewise, and, because of the' rollers pintles being connected to the punch blocks 13 and die blocks 3, the punches 12 and their dies 14 also follow the outline of the camber along the ima 'nary center line upon which the desired ho es are to be punched.

The action of guiding the punches and their dies is thus automatically accomplished,

'leavin the attendant or operator free .to

contro the longitudinal spacing of the holes as regulated by the templet, and also, to

operate the multiple punch to cause the downward stroke of the slide 11, which, as

two rectangular bars 17, each surrounding and carried by one of the pintles 16, the ends of these bars being bent into a slightly higher plane and presenting a point of attachment for springs 18, and these springs themselves. Thus are the rollers drawn toward each other, being kept separated by the guide 5 alone, the varying widths of said guide resulting in the actuating of the rollers 15 to move the punches and their dies across the surfaces of the plates 1.

While passing through the camber punching device, the guide 5 is restrained from lateral movement .by having an angle 19 depending from said guide, and secured thereto, pass between two rollers 20, the latter being mounted upon studs 21. The studs are secured into a plate 22, which is in turn secured to body 23 of the multiple punch.

Each punch block 13, which slides in the T-shaped slot 9 of the top plate 10, is provided with a gag 24 for rendering its respective punch either operative or inoperative. Attached to each gag is a handle 25 for actuating it. Reference to Figs. 1, 2, 4 and .5 clearly show the gags and their relation to the punches, and in Fig. 1 the top plate will be found to possess slots 26 which accommodate the outwardly projecting ends of the gags as the latter are moved transversely when the punch blocks travel partially across the face of the plate 1 as the result of the action of the guide 5 and rollers 15.

As seen in Fig. 2 at the left and also in Fig. 5, when the gag is pushed inwardly, the space above the stem of punch 12 is occupied .by said gag, and, therefore, when slide 11, moves downwardly said-punch is carried with it to perform its work. When, h'oweveri, said gag is pulled out so as not to be at all present over the punch stem the vacant space above said punch'stem permits the stem to recede into this space to an extent. suflicient to keep the punch 12 from penetrating the plate 1.

The operation of the device. is as follows:

Two webs or plates 1 are set into place in the usual manner, and are controlled by mechanism not shown, but thoroughly understood in the art, so as to be ca able of being fed forwardly from time to time and to the extent desired, at the will of the operator. The forward advance of the plates 1 is accompanied by a corresponding travel of the guide- 5 and the templet 4. As the first graduation on the templetcomes underneath the indicator 7, the

templet 4 are broug t to rest. Grasping lates 1, guide 5 and I tare again advanced until the next of the graduations 6 comes under the indicator 7, when .the advance is stopped and the punching-operation is repeated, and so on.

Now, if the foamberonth'e plates is. progressing to increase the width of the plate, the width of the guide 5 will be less than it was when the first; holes were punched in plates 1, and, under the action of springs 18, the rollers 15 .Will draw nearer to each other as permitted by the narrowing of the guide 5. It being borne in mind that the contours of the guide and the camber of plates 1 correspond, it will be seen that the distance each roller 15 moves in toward the other agrees with the amount of space that the second hole is displaced laterally from the first. And throughout each longitudinal step or movement of the plates 1, guide 5 and templet 4, the movement of the rollers 15, controlled by guide 5, coincides in the same Way with the lateral displacement of the holes to be successively punched in the plates.

The rollers 15, surrounding pintles'lfi, force the latter with them inwardly or outwardly according to the curvature or outline of guide 5, and the pintles being attached to the punch blocks 13 and die blocks 3 cause them to also move with the pintles an amount equal to that which the rollers 15 caused said pintles to move. Of course, with the punch and die .blocks, punches 12 and dies 14 move the same distance as the former were moved by the pintles. And, therefore, the curvature or outline of the guide 5, agreeing with the curvature or outline of the camber, and the punches and dies, 12 and 14, respectively, moving in synchronism with the rollers 15, which closely follow the outline of guide 5, a series of holes is punched in plates 1 which is parallel to the outline of the camber of said plates.

What I claim is I 1. In an automatically controlled punching device, a plurality of punches and dies, longitudinally movable means for automatically moving each punch and its die transversely of the work to varying lateral positions thereof, means for regulating the advance of said work through said machine, and means for operating said punches.

2. In an automatically controlled punching device, a plurality of punches and dies, longitudinally movable means for automatically moving each punch and its die transversely of the work to successively varying lateral positions thereof, said punches and dies being positioned on oppoing device,

site sides of said automatic means, means for regulating the advance of said work through said machine, and means for operating said punches.

3. In an automatically controlled punching device, a plurality of punches and dies, a longitudinally movable punch-guide and means coiiperating therewith adapted to automaticallyposition each punch and its die transversely of the work, means foregulating the longitudinal advance of said work, guiding means for said automatic means, selective means for rendering any punch operable, and means for operating a selected punch or punches.

4c. In a punching device, a plurality of punches and dies, supporting members therefor adapted to slide transversely of the work, devices for maintaining each punch supporting member in alinement with its associated die supporting member, and for synchronizing the sliding movement of both, longitudinally movable means for v actuating said devices to cause said punches and dies to automatically move transversely of said Work, means for regulating the longitudinal advance of said work, selective means for rendering any punch operable, and means for operating selected punches.

5. In a punching device, a plurality of punches and dies, slidable supporting members therefor, guiding and retaining members for said supporting members, devices for maintaining the alinement of associated punch and die supporting mlembers and for automatically imparting synchronous transverse movement to said supporting members with relation to the movement of the work and longitudinally movable means for actuating said devices to cause said punches and dies to move to successively varying positions transversely of said work.

6, In an automatically controlled punching device, slidable punch and die supporing members, a punch carried by the former and a die by the latter, a pintle secured to said die-supporting member, a roller mounted on said pintle, means impinged against by said roller, adapted to move said roller to successively varying positions, whereby said punch and die are correspondingly moved transversely of the work, means for regulating the ad vance of said work under said punch, and means for operating said punch at will.

7. In an automatically controlled puncha couple of oppositely movable die-supporting members, a die in each, and each carrying a pintle, a couple of oppositely movable punch supporting members each carrying a punch, and each engaged by one of said pintles and adapted to slide telescopically thereon, a roller mounted on each plntle, means engaged by each roller adapted to move the latter to successively said means being of the work, means or regulating the a vance of said work, means for renderingeither or both punches operable and means for operating operative punches.

8. In an automatically controlled punching device, a couple of oppositely movable die-supporting members, a die in each, and each carryin a pintle, a couple of 0 p0- sitely movab e punch supporting mem ers each carrying a punch, and each enga ed by one of sald pintles and adapted to sllde telescopically thereon, a roller mounted on each pintle, a guide, each. of whosesides is a developed cam of the same outline as a path of changeable direction in which holes are to be produced, spring pressed means for maintaining said rollers in contact with the cam sides of said guide, a longitudinal spacing templet earned by said guide and an indicator co-acting therewith whereby the advance of said work may be regulated, means for directing the movement of said guide, means for rendering either or both punches operable, and means for operating operative punches.

9. In combination in a punching machine, a punch and a die, a longitudinally movable templet and punch guide and means cooperating with said guide adapt'ed to automatically shift the positions of-said punch and die during longitudinal movement of the templet. I

.10.. In combination in a unching machine, a longitudinally movab e punch guide having a side pre etermined contour, a movable unch and die and means bearing on the side of said guide and connected to and connecting said punch and die adapted to automatica 1y move said punch and die transversel of the path of travel of said punch gui e.

11. In combination in a punching machine, a longitudinally movable punch guide of variable width, punches movable transversely of the path of travel of said punch guide and resilient means connecting said punches adapted to bear on said guide.

12. In combination in. a punching machine, a longitudinally movable punch guide, means for preventing lateral movement of said guide, a punch movable transversely of the path of travel of said guide, a yieldingliv held roller adapted to bear on said gui e and means connecting the roller and saidvpunch adapted to synchronize their movements.

In witness whereof I have hereunto set my hand in the resence of two witnesses.

FRE ERICK A. STEVENSON.

' Witnesses: I

ELIOT W. -STU'DER, ARNOLD L. PIPPER. 

